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server-dmarc-hint: the server's own name gets a DMARC record

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Owner, 2026-10-18: "Оба предложения делаем"; the mockup is 8b2dc8f. The
security audit's S3 left a product side: the panel showed the DKIM and SPF
records of the server's own name, not a DMARC one, and without it a
receiver does not refuse mail forged in that name - a false password-reset
message among it.

dnscheck.ServerMail checks a third record (Mail.DMARC, checkServerDMARC):
the sending-domain DMARC check held to more - missing is an error, as a
missing DKIM or SPF record of this name is (the page draws it as a
warning: notifications still go), p=none a warning ("weak": it refuses
nothing), quarantine or reject ok - and Overall includes it. The record to
publish is ServerMailDMARC, v=DMARC1; p=reject: only the panel sends as
the name, signed with its key, from the address its SPF names, so reject
costs nothing. Settings › Notification mail draws it after SPF
(view.ServerMailDMARC, folded when published), Health's card has the row,
Re-check DNS re-reads it with the others.

Tests: TestServerMailDMARC (missing, p=none, quarantine, reject); the
Settings and Health tests publish and expect three records. Help word for
word with the mockup; guide § Notifications; roadmap; CHANGELOG.

Co-Authored-By: Claude Opus 5.5 <noreply@anthropic.com>
This commit is contained in:
mix
2026-10-18 10:05:39 +03:00
co-authored by Claude Opus 5.5
parent 8b2dc8f40f
commit 554e007f22
11 changed files with 135 additions and 28 deletions
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docs/roadmap.md
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@@ -30,7 +30,7 @@ in `git log` and [CHANGELOG.md](../CHANGELOG.md).
|---|---|---|---|---|
| security-audit-2026-10-17 | Follow-ups of the 2026-10-17 security audit: A2 (high), seven mediums, the lows | stages 0-6 shipped `2.14.4` (2026-10-17); stage H (the host, S1-S3, S5) the owner's | 27/29 | [security-audit-2026-10-17.md](security-audit-2026-10-17.md) |
| upstream-tls-verify | Inbound: offer "Verified" TLS to the upstream (Postfix `secure`, the upstream's name checked), beside Required, which checks no certificate (audit M7) | proposed | — | — |
| server-dmarc-hint | Server › Settings lists a DMARC record for the server's own name beside its DKIM and SPF (audit S3, product side) | proposed | — | — |
| server-dmarc-hint | Server › Settings lists a DMARC record for the server's own name beside its DKIM and SPF (audit S3, product side) | built 2026-10-18 (owner: "Оба предложения делаем") | — | — |
| inbound-upstream-result | Inbound › Log shows what the upstream answered: sent, deferred, bounced, with its last reply | shipped `2.10.0` | 7/7 | [plans/inbound-upstream-result.md](plans/inbound-upstream-result.md) |
| health-setup-checks | Server › Health also checks the certificate's name, Postfix's greeting and the trusted proxy (was preflight) | shipped `2.11.0` | — | — |
| test-email | Send a test message from the panel (was preflight) | shipped `2.12.0` | — | — |